Terahertz Spectroscopic Measurement of the Intraocular Pressure and Diagnosis of the Corneal Endothelial Layer Damage

A THz-TDS corneal 3D scanner was designed and used to investigate tissue water content perturbations caused by elevated intraocular pressure (IOP). We show that the correlation between increased THz amplitude in the 0.3 and 0.6 THz and IOP levels can be used for non-contact measurement of the IOP. The SEM images confirmed degrees of damage to the endothelial layer.